Apparatus for the manufacture of window-glass.



R. S. PEASB & J. A. SWEET.

APPARATUS PQR THE MANUFAGTUBE o? WINDOW GLASS.

APPLICATION ILBD HOV. 7, 1908.

Patented Jan. 18,1910.

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UNITED STATES PATENT OFFICE.

ROGER S. PEASE AND JOHN A. SWEET. 0F HARTFORD CITY, INDIANA, SSIGNORS TO ALFRED M. LEE, TRUSTEE, OF PTTSBURG, PENNSYLVANIA.

APPARATUS FOR TBE MANUFACTUBE OF WINDOW-GLASS.

Specification of Letters Patent.

Patented Jan. 18, 1910.

Application led November -7, 1968. Serial No. 461,485.

States, residing at Hartford City, in the county of Blackford and State of Indiana, have invented. certain new and useful lmrovements in Apparatus for Manufacturing Window-Glass, of which the following is a specification, reference being had therein to the accompanying drawing.

Our invention refers to improvements in the manufacture of window glass and is particularly designed for the purpose of providing means for facilitating the drawing of cylinders from a body of molten glass in a tank, pot, or anysuitable containing vessel, and consists of a double ring composed of two freely connected rings adaptedto be used upon the surface of the' glass to be drawn to segregate a portion thereof within a limited zone for the purpose of eliminating impurities, providing a smooth, clean surface of pure glass adapted to be shifted about beneath the drawing opening, or a protecting verticallyY adjustable shell therein to provide communication with the lower interior of the glass-containing vessel for the dra-wing tool and to be utilized for removing the surplus glass after the drawing operation to a lateral position for re-melting.

In the drawings: Figure 1 is a vertical sectional view through the glass-containing compartment of a melting tank illust-rating the device in position for drawing. Fig. 2

is asectional view indicated by the line II.

II. of Fig. 1. Fig. 3 isa similar view showing the connected rings in a different position. Fig. 4 is a perspective view of the companion rings assembled.

Our invention is designed for use with any suitable glass-containing vessel or preferably in combination with a tank extension wherein the body of glass from which the cylinders are drawn is in constant open communication with the main tank.

In the drawings, 2 represents the main ing a door 3 substantially on the saine general level as the oor of the main tank and bounded within side walls -l and an end wall 5. Said tank extension is covered at the portion adjacent to the main tank by ,a straight preferably arched roof or cover portion 6, the cover sloping upwardly and outwardly toward the outer end as indicated at T. whereby the inner cover `is lot-.ated l omewhat closelvadjacent to the surface b ot' the glass for the drawing operation and is provided with a circular opening S for such purpose. The cavity beneath the outer portion of the cover is also thus enlarged vertically for clearance of the fuel supply burners. insertion of manipulating tools for handling the rings, removal of impurities. etc.

The burners are indicated by the numeral 9, referring to any suit-able uelsupplying device as air and oil bn: ners inserted throughopenings 10 atany suitable point or points and preferably directed inwardly and downwardly toward the point e indicating the center of the drawing operation. Any desired number of such :iets may be iutroduced through the end or side walls or both, and when so arranged will operate lo keep the contents of the tank extension at any desired heat for drawing. supplementing the heat of the main tank. while the amount of fuel discharged may o e accurately controlled and varied from timeto time through one or more of the burner jets for the purpose of temporary rapid heat-ing of the glass as desired,'or for meltingY any adhering glass from the vertically adjustable ring.

For the purpose of protecting the cylinder-in-process from surrounding impurities. variations in the heat, air currents, etc., and for cooperation with one of the lioating rings to insure a continuous supply of heated glass from below, we employ a vertically adjustable ring 13 of fire-clay or other vitreous material arranged for raising or lowering through opening 8 b any suitable means.

For the purpose o providing a segregated portion of clean glass, we have provided the pair of interlocking companion rings 14, 15,

adapted to be pushed or pulled together to locate one or the other of them immediately beneath the ring 13 as in 1, the otherring being located in front of or behind said vertically adjustable ring, according to which one will engage the other and maintain theV rings in longitudinal relation with each other, preventing se aration when floating upon the surface of t ie glass, but permitting one ring to be depressed or elevated independent of the other.

As thus constructed' and assembled, the.

rings are located within the glass-containing chamber as shown and are readily manipulable by any suitable tool, as a hooked rod, through the opening inthe front wall, and one or the other of the rings may be located beneath the vertically adjustable ring 13 for each drawing operation, as indicated in Fig. 1. Vv' hen the drawing operation has been performed through said coperatino' ring, and the surplus glass has been droppe back into floating ring 14 after severance from the completed cylinder, ring 15 is advanced into register with ring 13, ring 14 and its contained partly-melted surplus being carried outwardly toward the main tank and into subjection of the heat therein. The next operation is now performed through rings 13 and 15, lthe' surplus glass being `melted within ring 14 so that at the next Y operation, fresh melted glass will be pre pared and the operation is a am repeated upoz'` re-locating the rings by drawing them backwardly.

A. particular advantage of the companion ring construction is that each ring when located beneath the vertically adjustable pro tecting'ring 13 forms a continuation thereof, resents a clean fresh surface of glass to e drawn from, the continuous drawing utilizing the glass from the lower portion ofthe containing vessel. By reason of the free and easily working joint, the .particular ring underneath the protecting ring 13 may be depressed or further submerged into the glass, due to the weight of said ring, without affecting the other ring, and as thus constructed the device will be found to provide an easy, sim le and convenient means for the purpose o bringin portions of the glass into register with the raw ing opening.

The rings themselves are of easy and cheap manufacture, one or the other may be renewed it broken; while their efficiency for the purposes intended will greatly facilitate the operation of making mechanically drawn cylinders.

Having described our invention, what we claim is Y 1. 'A glass containing vessel having an upper drawing opening, and a pair of freely connected interlocking companion rings arranged for flotation and location as to one of said rings beneath said opening, substantially as set forth.

Q. A glass containing vessel having an upper drawing opening, a vertically adjustable shell therein, and a pair of freely connected interlocking companion rings arranged for flotation and location as to one'of said rings, beneath said opening, substantially as set forth. 1

3. Companion rings for the purpose set forth, the one having a locking projection and the other having an inter-engaging portion adapted to interlock therewith to prevent lateral separation, substantially Vas set forth.

4. Companion rings for the purpose set forth. the one having a locking projection and the other having an inter-engaging portion adapted to interlock therewith, with intervening clearance for relative vert-ical movement, substantially as set forth.

In testimony whereof we aiix our signa tures in presence of two witnesses.

A ROGER S. PEASE.

JOHN A. SVEET.

Witnesses: FRED lV. WHLMAN,

Davm C. CALDWELL. 

